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[Bug rtl-optimization/70886] New: -frename-registers causes boostrap comparison failures on ia64


https://gcc.gnu.org/bugzilla/show_bug.cgi?id=70886

            Bug ID: 70886
           Summary: -frename-registers causes boostrap comparison failures
                    on ia64
           Product: gcc
           Version: 7.0
            Status: UNCONFIRMED
          Keywords: build
          Severity: normal
          Priority: P3
         Component: rtl-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: schwab@linux-m68k.org
  Target Milestone: ---
            Target: ia64-*-*

Since -frename-registers was enabled by default with -O2 there are boostrap
comparison failures on ia64.

Bootstrap comparison failure!
gcc/ada/sem_ch12.o differs
gcc/ada/scos.o differs

The differences are rather complex, but may be equivalent.

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